Electricity: motive power systems – Linear-movement motors
Reexamination Certificate
2005-10-11
2005-10-11
Schuberg, Darren (Department: 2834)
Electricity: motive power systems
Linear-movement motors
C310S012060, C355S053000, C355S072000
Reexamination Certificate
active
06954041
ABSTRACT:
Compatibility of a small spring constant and large supporting load is realized, so that a stable operation is assured even if a fine-movement linear motor fails. A supporting unit, having a plurality of magnets whose same poles are arranged facing each other, is adapted to support the self-weight of a top plate on which an object to be positioned is mounted, using a repulsive force in a direction orthogonal to the facing direction of the plurality of magnets. In a characteristic curve representing the relationship between the floating force and displacement in a floating direction, the tangent inclination when the object is at a first position in the floating direction is negative, and the relationship of floating force<the self-weight holds when the object is at a second position lower than the first position.
REFERENCES:
patent: 3747998 (1973-07-01), Klein et al.
patent: 3791704 (1974-02-01), Perper
patent: 4684315 (1987-08-01), Sugishima et al.
patent: 4805761 (1989-02-01), Totsch
patent: 5017819 (1991-05-01), Patt et al.
patent: 5202598 (1993-04-01), Katsumata
patent: 5467720 (1995-11-01), Korenaga et al.
patent: 5684856 (1997-11-01), Itoh et al.
patent: 5831362 (1998-11-01), Chu et al.
patent: 5841250 (1998-11-01), Korenaga et al.
patent: 5942825 (1999-08-01), Lee
patent: 6002465 (1999-12-01), Korenaga
patent: 6037680 (2000-03-01), Korenaga et al.
patent: 6107703 (2000-08-01), Korenaga et al.
patent: 6128069 (2000-10-01), Korenaga
patent: 6157159 (2000-12-01), Korenaga et al.
patent: 6172738 (2001-01-01), Korenaga et al.
patent: 6177978 (2001-01-01), Korenaga
patent: 6218751 (2001-04-01), Bohlin
patent: 6265793 (2001-07-01), Korenaga
patent: 6320645 (2001-11-01), Inoue et al.
patent: 6359677 (2002-03-01), Itoh et al.
patent: 6414742 (2002-07-01), Korenaga et al.
patent: 6448679 (2002-09-01), Imlach
patent: 6479991 (2002-11-01), Korenaga
patent: 6570645 (2003-05-01), Korenaga et al.
patent: 6784581 (2004-08-01), Chen et al.
patent: 6833643 (2004-12-01), Beyer et al.
patent: 2001/0031191 (2001-10-01), Korenaga
patent: 2003/0007140 (2003-01-01), Korenaga
patent: 2003/0102723 (2003-06-01), Korenaga
patent: 29 38 782 (1981-04-01), None
patent: 1 168 084 (2002-01-01), None
patent: 57-101558 (1982-06-01), None
European Search Report dated Jan. 18, 2005, issued in corresponding European patent appln. No. 03 25 2944, forwarded in a Communication dated Jan. 18, 2005.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Jones Judson H.
Schuberg Darren
LandOfFree
Supporting apparatus having a plurality of magnets that... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Supporting apparatus having a plurality of magnets that..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supporting apparatus having a plurality of magnets that... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3465157